21120420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{352007}}^1$

素因数の和:352019

約数の個数: 24

約数和(自身を含む): 59137344

約数和(自身を除く): 38016924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 352007, 704014, 1056021, 1408028, 1760035, 2112042, 3520070, 4224084, 5280105, 7040140, 10560210, 21120420]

約数ペア:

[(1, 21120420), (2, 10560210), (3, 7040140), (4, 5280105), (5, 4224084), (6, 3520070), (10, 2112042), (12, 1760035), (15, 1408028), (20, 1056021), (30, 704014), (60, 352007)]